/*
 * FindBugs - Find bugs in Java programs
 * Copyright (C) 2005, University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package edu.umd.cs.findbugs.filter;

import java.io.IOException;

import edu.umd.cs.findbugs.BugInstance;
import edu.umd.cs.findbugs.BugRanker;
import edu.umd.cs.findbugs.xml.XMLAttributeList;
import edu.umd.cs.findbugs.xml.XMLOutput;

/**
 * Matcher to select BugInstances with a particular rank or higher.
 * 
 * @author William Pugh
 */
public class RankMatcher implements Matcher {
	private int rank;

	@Override
    public String toString() {
		return "Rank(rank="+rank+")";
	}
	/**
	 * Constructor.
	 * 
	 * @param rankAsString the rank, as a String
	 * @throws NumberFormatException if the rank cannot be parsed
	 */
	public RankMatcher(String rankAsString) {
			this.rank = Integer.parseInt(rankAsString);
	}

	@Override
    public int hashCode() {
		return rank;
	}
	@Override
    public boolean equals(Object o) {
		if (!(o instanceof RankMatcher)) return false;
		RankMatcher other = (RankMatcher) o;
		return rank == other.rank;
	}
	public boolean match(BugInstance bugInstance) {
		return  BugRanker.findRank(bugInstance) >= rank;
	}
	public void writeXML(XMLOutput xmlOutput, boolean disabled) throws IOException {
		XMLAttributeList attributes = new XMLAttributeList().addAttribute("value", Integer.toString(rank));
		if (disabled) attributes.addAttribute("disabled", "true");
		xmlOutput.openCloseTag("Rank", attributes);
	}
}
